![the role of microbial endosymbionts in sorghum halepense](http://s1.studyres.com/store/data/015218029_1-f17ba958fcf7145e712657532c0442e0-300x300.png)
the role of microbial endosymbionts in sorghum halepense
... Invasive plants can profoundly alter ecosystem processes, and tremendous economic costs are often associated with these disturbances. Attributes like higher growth rates, increased biomass, and enhanced chemical defenses have been documented in many invasive plants. When expanding into new ranges, t ...
... Invasive plants can profoundly alter ecosystem processes, and tremendous economic costs are often associated with these disturbances. Attributes like higher growth rates, increased biomass, and enhanced chemical defenses have been documented in many invasive plants. When expanding into new ranges, t ...
The feral pig (Sus scrofa)
... they do not yet occur and where they are likely to pose a threat to nationally listed threatened species and ecological communities • quantifying the impact that feral pigs have on nationally listed threatened species and ecological communities • increasing awareness and understanding of the damage ...
... they do not yet occur and where they are likely to pose a threat to nationally listed threatened species and ecological communities • quantifying the impact that feral pigs have on nationally listed threatened species and ecological communities • increasing awareness and understanding of the damage ...
Greater Bilby (Macrotis lagotis)
... after dusk and retreat at least an hour before dawn. A full moon, strong wind, and heavy rain can keep a Bilby in its burrow all night. ...
... after dusk and retreat at least an hour before dawn. A full moon, strong wind, and heavy rain can keep a Bilby in its burrow all night. ...
Docket No. FWS–HQ–ES–2
... expected to bring about extinction on a shorter timescale (once the threats are imminent) than for species with lower magnitude threats. Because we do not routinely quantify how likely or how soon extinction would be expected to occur absent listing, we must evaluate factors that contribute to the l ...
... expected to bring about extinction on a shorter timescale (once the threats are imminent) than for species with lower magnitude threats. Because we do not routinely quantify how likely or how soon extinction would be expected to occur absent listing, we must evaluate factors that contribute to the l ...
Untangling the roles of parasites in food webs with
... webs with statistically similar structure to the empirical data via standard network measures; and (iii) the out-ofsample prediction accuracy for missing links, formalized as an AUC statistic in which we remove a subset of links from the empirical web and measure the models ability to accurately ide ...
... webs with statistically similar structure to the empirical data via standard network measures; and (iii) the out-ofsample prediction accuracy for missing links, formalized as an AUC statistic in which we remove a subset of links from the empirical web and measure the models ability to accurately ide ...
ASSESSING THE IMPACT OF SOFT-WATER CALCIUM DECLINE ON THE LIFE- DAPHNIA
... species, such as copepods, which range from 0.2-0.4% (Jeziorski & Yan 2006). Calcium demand is further intensified for Daphnia due to the continuous molting of calcified exoskeletons, known as carapaces. Rather than reabsorbing Ca from their carapace prior to molting, Daphnia acquire aqueous calcium ...
... species, such as copepods, which range from 0.2-0.4% (Jeziorski & Yan 2006). Calcium demand is further intensified for Daphnia due to the continuous molting of calcified exoskeletons, known as carapaces. Rather than reabsorbing Ca from their carapace prior to molting, Daphnia acquire aqueous calcium ...
Daphnia hybridization along ecological gradients in pelagic
... tend to offer much more homogeneous conditions for plankton, and ecologically different pelagic environments are usually isolated from each other in island-like nature (Schwenk & Spaak 1995). As the space used by parental taxa and hybrids typically overlaps in the whole lake area, the coexistence of ...
... tend to offer much more homogeneous conditions for plankton, and ecologically different pelagic environments are usually isolated from each other in island-like nature (Schwenk & Spaak 1995). As the space used by parental taxa and hybrids typically overlaps in the whole lake area, the coexistence of ...
These_4_niveau 2 et 3 - Chaire CRSNG/Hydro
... Rising awareness about the unprecedented rate of species extinctions created growing concern about the impacts of biodiversity loss on ecosystem functioning at the end of the 20h century. In consequence, a systematic and concerted search to understand the relation between biodiversity and ecosystem ...
... Rising awareness about the unprecedented rate of species extinctions created growing concern about the impacts of biodiversity loss on ecosystem functioning at the end of the 20h century. In consequence, a systematic and concerted search to understand the relation between biodiversity and ecosystem ...
A review of parasites in the Tasmanian devil (Sarcophilus harrisii
... impact upon a species’ viability when interacting with other negative drivers such as reduced habitat, climate change, ...
... impact upon a species’ viability when interacting with other negative drivers such as reduced habitat, climate change, ...
Effects of human actions on four ecological systems, Margaret Candace Kosmala
... Figure 3-11: Number of aphids per plant after two weeks of being covered by mesh or left uncovered ....................................................................................................................................... 58 Figure 3-12: Log number of aphids per plant after two weeks of ...
... Figure 3-11: Number of aphids per plant after two weeks of being covered by mesh or left uncovered ....................................................................................................................................... 58 Figure 3-12: Log number of aphids per plant after two weeks of ...
Predation of Native Wildlife by the Cat
... Reasons for the Significance of the Process A range of processes threaten native wildlife in Victoria and other parts of Australia. Kennedy (1992) suggested that the interaction of introduced herbivores, introduced predators and altered fire regimes has played the most significant part in the large ...
... Reasons for the Significance of the Process A range of processes threaten native wildlife in Victoria and other parts of Australia. Kennedy (1992) suggested that the interaction of introduced herbivores, introduced predators and altered fire regimes has played the most significant part in the large ...
Predation of Native Wildlife by the Cat Felis catus
... Reasons for the Significance of the Process A range of processes threaten native wildlife in Victoria and other parts of Australia. Kennedy (1992) suggested that the interaction of introduced herbivores, introduced predators and altered fire regimes has played the most significant part in the large ...
... Reasons for the Significance of the Process A range of processes threaten native wildlife in Victoria and other parts of Australia. Kennedy (1992) suggested that the interaction of introduced herbivores, introduced predators and altered fire regimes has played the most significant part in the large ...
The effect of rabbits on conservation values
... Some species that are presumed extinct and for which rabbits have been implicated in their demise include Logania depressa, Myosotis laingii and Stellaria elatinoides (P. de Lange, pers. comm.). Other species once widespread in the short tussock grasslands, e.g., the highly palatable Gingidia montan ...
... Some species that are presumed extinct and for which rabbits have been implicated in their demise include Logania depressa, Myosotis laingii and Stellaria elatinoides (P. de Lange, pers. comm.). Other species once widespread in the short tussock grasslands, e.g., the highly palatable Gingidia montan ...
Floristic patterns along an east–west gradient in grassy box
... chose to sample larger areas rather than smaller quadrats because this was more effective for detecting native species that are often sparse in grazed sites, and because it provided a more complete record of discrete remnants, and thus was valuable for conservation planning and management purposes. ...
... chose to sample larger areas rather than smaller quadrats because this was more effective for detecting native species that are often sparse in grazed sites, and because it provided a more complete record of discrete remnants, and thus was valuable for conservation planning and management purposes. ...
2. Pest Animal Management in the Glenelg Hopkins Region
... and community investment in pest animal management. These have been developed in line with the Invasive Plants and Animals Policy Framework which describes the Victorian Government’s objectives and biosecurity approach to invasive plant and animal management on public and private land. The scope of ...
... and community investment in pest animal management. These have been developed in line with the Invasive Plants and Animals Policy Framework which describes the Victorian Government’s objectives and biosecurity approach to invasive plant and animal management on public and private land. The scope of ...
Ecological Risk Assessment of Non
... Exotic Earthworms in Recently Glaciated Portions of North America In the recently glaciated portions of the United States, the most dramatic impacts of exotic earthworms are generally limited to northern deciduous forest habitats. To further define the area: “Part of it [forest] consists of mixed st ...
... Exotic Earthworms in Recently Glaciated Portions of North America In the recently glaciated portions of the United States, the most dramatic impacts of exotic earthworms are generally limited to northern deciduous forest habitats. To further define the area: “Part of it [forest] consists of mixed st ...
Linking internal and external bacterial community control gives
... many studies fruitfully treated the community of heterotrophic bacteria as one plankton functional type (PFT), without resolving its internal structure. In contrast, the development from around 1990 of molecular techniques powerful enough to analyze samples from complex systems (Giovannoni et al., 1 ...
... many studies fruitfully treated the community of heterotrophic bacteria as one plankton functional type (PFT), without resolving its internal structure. In contrast, the development from around 1990 of molecular techniques powerful enough to analyze samples from complex systems (Giovannoni et al., 1 ...
Freshwater Mussels of Michgian - Michigan Natural Features Inventory
... and caddisflies than any other country. There are nearly 300 species of freshwater mussels (Unionidae) in eastern North America, with 45 species occurring in Michigan. This brochure focuses on unionid mussels, however there are a total of four families of bivalves that live in the streams and lakes ...
... and caddisflies than any other country. There are nearly 300 species of freshwater mussels (Unionidae) in eastern North America, with 45 species occurring in Michigan. This brochure focuses on unionid mussels, however there are a total of four families of bivalves that live in the streams and lakes ...
Species interactions Niche: an individual`s ecological role
... Although mustangs are not native to the U.S., they exist in several western states, on federally owned land. As an introduced species, what should be done with them? a) As an exotic species, they should immediately be removed and adopted or killed b) Although they are an exotic species, they are par ...
... Although mustangs are not native to the U.S., they exist in several western states, on federally owned land. As an introduced species, what should be done with them? a) As an exotic species, they should immediately be removed and adopted or killed b) Although they are an exotic species, they are par ...
SILICA ACCUMULATION IN GRASSES IN REPONSE TO A LARGE
... Silicon (Si) is the second most abundant element in the earth´s crust and in its form of silica (SiO2) represents an important inorganic constituent in plants (Epstein 1999; Müller 2003). Although all plants contains silicon, the concentration of this element varies greatly among plant species (0,1- ...
... Silicon (Si) is the second most abundant element in the earth´s crust and in its form of silica (SiO2) represents an important inorganic constituent in plants (Epstein 1999; Müller 2003). Although all plants contains silicon, the concentration of this element varies greatly among plant species (0,1- ...
The harlequin ladybird, Harmonia axyridis
... perspectives. We reflect broadly on the contributions ...
... perspectives. We reflect broadly on the contributions ...
Patterns of invertebrate distribution and abundance on Cordyline
... although species richness of specialists was highest in forest sites, the majority of hostspecialised species were not restricted to forest habitats and were as widespread as many generalists. In terms of site occupancy, only two specialist and four generalist species were rare. I show that patterns ...
... although species richness of specialists was highest in forest sites, the majority of hostspecialised species were not restricted to forest habitats and were as widespread as many generalists. In terms of site occupancy, only two specialist and four generalist species were rare. I show that patterns ...
Axis porcinus, Hog Deer
... Pilhibit Forest Division, particularly the Lagga Bagga forest block (now within a Tiger reserve; B. Long pers. comm. 2008); that Kishanpur Wildife Sanctuary (203 km2), with one of the few remnants of Terai habitat in India, supported considerable numbers, and that Katarniaghat Wildife Division also ...
... Pilhibit Forest Division, particularly the Lagga Bagga forest block (now within a Tiger reserve; B. Long pers. comm. 2008); that Kishanpur Wildife Sanctuary (203 km2), with one of the few remnants of Terai habitat in India, supported considerable numbers, and that Katarniaghat Wildife Division also ...
LIFE and European Mammals - European Commission
... ‘umbrella’ species and actions targeted at these species can have a positive impact on the populations of a whole series of other species and a range of habitat types. These include emblematic species such as the Iberian lynx, the Abruzzo chamois and the monk seal, which also catch the imagination o ...
... ‘umbrella’ species and actions targeted at these species can have a positive impact on the populations of a whole series of other species and a range of habitat types. These include emblematic species such as the Iberian lynx, the Abruzzo chamois and the monk seal, which also catch the imagination o ...
A synthesis of subdisciplines: predator–prey interactions, and
... consumer diversity in consumer-resource systems. Here, we use the terms ÔconsumerÕ and ÔresourceÕ broadly to encompass systems such as predators feeding on herbivores, herbivores feeding on plants, or plants ÔconsumingÕ (i.e. absorbing) nutrients. To highlight the similarities and differences betwee ...
... consumer diversity in consumer-resource systems. Here, we use the terms ÔconsumerÕ and ÔresourceÕ broadly to encompass systems such as predators feeding on herbivores, herbivores feeding on plants, or plants ÔconsumingÕ (i.e. absorbing) nutrients. To highlight the similarities and differences betwee ...
Introduced species
![](https://commons.wikimedia.org/wiki/Special:FilePath/Melilotus_alba_bgiu.jpg?width=300)
An introduced, alien, exotic, non-indigenous, or non-native species, or simply an introduction, is a species living outside its native distributional range, which has arrived there by human activity, either deliberate or accidental. Non-native species can have various effects on the local ecosystem. Introduced species that become established and spread beyond the place of introduction are called invasive species. Some have a negative effect on a local ecosystem. Some introduced species may have no negative effect or only minor impact. Some species have been introduced intentionally to combat pests. They are called biocontrols and may be regarded as beneficial as an alternative to pesticides in agriculture for example. In some instances the potential for being beneficial or detrimental in the long run remains unknown. A list of some introduced species is given in a separate article.The effects of introduced species on natural environments have gained much scrutiny from scientists, governments, farmers and others.